package com.lkd.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import com.lkd.common.VMSystem;
import com.lkd.config.TopicConfig;
import com.lkd.contract.SupplyChannel;
import com.lkd.contract.SupplyContract;
import com.lkd.contract.VendoutContract;
import com.lkd.contract.VendoutData;
import com.lkd.dao.VendingMachineDao;
import com.lkd.emq.MqttProducer;
import com.lkd.entity.*;
import com.lkd.exception.LogicException;
import com.lkd.http.vo.CreateVMReq;
import com.lkd.service.*;
import com.lkd.utils.UUIDUtils;
import com.lkd.vo.Pager;
import com.lkd.vo.SkuVO;
import com.lkd.vo.VmVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@Slf4j
public class VendingMachineServiceImpl extends ServiceImpl<VendingMachineDao, VendingMachineEntity> implements VendingMachineService {

    @Autowired
    private NodeService nodeService;

    @Autowired
    private ChannelService channelService;

    @Autowired
    private VmTypeService vmTypeService;

    @Resource
    private VendingMachineDao vendingMachineDao;

    @Autowired
    private MqttProducer mqttProducer;

    @Autowired
    private VendoutRunningService vendoutRunningService;

    @Override
    public List<VendingMachineEntity> getByNodeId(Long nodeId) {
        List<VendingMachineEntity> list = vendingMachineDao.findByNodeId(nodeId);
        return list;
    }

    @Override
    @Transactional(rollbackFor = {Exception.class})
    public boolean add(CreateVMReq vendingMachine) {
        VendingMachineEntity vendingMachineEntity = new VendingMachineEntity();
        vendingMachineEntity.setNodeId(Long.valueOf(vendingMachine.getNodeId()));
        vendingMachineEntity.setVmType(vendingMachine.getVmType());
        NodeEntity nodeEntity = nodeService.getById(vendingMachine.getNodeId());
        if (nodeEntity == null) {
            throw new LogicException("所选点位不存在");
        }
        //复制属性
        BeanUtils.copyProperties(nodeEntity, vendingMachineEntity);
        vendingMachineEntity.setCreateUserId(Long.valueOf(vendingMachine.getCreateUserId()));
        vendingMachineEntity.setInnerCode(UUIDUtils.getUUID());
        vendingMachineEntity.setClientId(UUIDUtils.generateClientId(vendingMachineEntity.getInnerCode()));
        this.save(vendingMachineEntity);
        //创建货道数据
        createChannel(vendingMachineEntity);
        return true;
    }


    /**
     * 创建货道
     *
     * @param vm
     * @return
     */
    private boolean createChannel(VendingMachineEntity vm) {
        VmTypeEntity vmType = vmTypeService.getById(vm.getVmType());
        List<ChannelEntity> channelList = Lists.newArrayList();
        for (int i = 1; i <= vmType.getVmRow(); i++) {
            for (int j = 1; j <= vmType.getVmCol(); j++) {
                ChannelEntity channel = new ChannelEntity();
                channel.setChannelCode(i + "-" + j);
                channel.setCurrentCapacity(0);
                channel.setInnerCode(vm.getInnerCode());
                channel.setLastSupplyTime(vm.getLastSupplyTime());
                channel.setMaxCapacity(vmType.getChannelMaxCapacity());
                channel.setVmId(vm.getId());
                channelList.add(channel);
            }
        }
        channelService.saveBatch(channelList);
        return true;
    }


    @Override
    public boolean update(Long id, Long nodeId) {
        VendingMachineEntity vm = this.getById(id);
        if (vm.getVmStatus() == VMSystem.VM_STATUS_RUNNING.intValue()) {
            throw new LogicException("改设备正在运营");
        }
        NodeEntity nodeEntity = nodeService.getById(nodeId);
        BeanUtils.copyProperties(nodeEntity, vm);
        return this.updateById(vm);
    }


    @Override
    public Pager<String> getAllInnerCodes(boolean isRunning, long pageIndex, long pageSize) {
        com.baomidou.mybatisplus.extension.plugins.pagination.Page<VendingMachineEntity> page = new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(pageIndex, pageSize);

        QueryWrapper<VendingMachineEntity> qw = new QueryWrapper<>();
        if (isRunning) {
            qw.lambda()
                    .select(VendingMachineEntity::getInnerCode)
                    .eq(VendingMachineEntity::getVmStatus, 1);
        } else {
            qw.lambda()
                    .select(VendingMachineEntity::getInnerCode)
                    .ne(VendingMachineEntity::getVmStatus, 1);
        }
        this.page(page, qw);
        Pager<String> result = new Pager<>();
        result.setCurrentPageRecords(page.getRecords().stream().map(VendingMachineEntity::getInnerCode).collect(Collectors.toList()));
        result.setPageIndex(page.getCurrent());
        result.setPageSize(page.getSize());
        result.setTotalCount(page.getTotal());

        return result;
    }

    @Override
    public Pager<VendingMachineEntity> query(Long pageIndex, Long pageSize, Integer status, String innerCode) {
        com.baomidou.mybatisplus.extension.plugins.pagination.Page<VendingMachineEntity> page
                = new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(pageIndex, pageSize);
        LambdaQueryWrapper<VendingMachineEntity> queryWrapper = new LambdaQueryWrapper<>();
        if (status != null) {
            queryWrapper.eq(VendingMachineEntity::getVmStatus, status);
        }
        if (!Strings.isNullOrEmpty(innerCode)) {
            queryWrapper.likeLeft(VendingMachineEntity::getInnerCode, innerCode);
        }
        this.page(page, queryWrapper);

        return Pager.build(page);
    }


    @Override
    public VmVO findByInnerCode(String innerCode) {
        LambdaQueryWrapper<VendingMachineEntity> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(VendingMachineEntity::getInnerCode, innerCode);
        VendingMachineEntity vm = this.getOne(queryWrapper);
        VmVO vmVO = new VmVO();
        BeanUtils.copyProperties(vm, vmVO);
        vmVO.setNodeAddr(vm.getNode().getAddr());//地址
        vmVO.setNodeName(vm.getNode().getName());//名称
        return vmVO;
    }


    @Override
    public boolean updateStatus(String innerCode, Integer status) {
        try {
            UpdateWrapper<VendingMachineEntity> uw = new UpdateWrapper<>();
            uw.lambda()
                    .eq(VendingMachineEntity::getInnerCode, innerCode)
                    .set(VendingMachineEntity::getVmStatus, status);
            this.update(uw);

        } catch (Exception ex) {
            log.error("updateStatus error,innerCode is " + innerCode + " status is " + status, ex);
            return false;
        }
        return true;
    }


    @Override
    public List<SkuVO> getSkuListByInnerCode(String innerCode) {
        //获取货道列表
        List<ChannelEntity> channelList = channelService.getChannelesByInnerCode(innerCode).stream()
                .filter(c -> c.getSkuId() > 0 && c.getSku() != null).collect(Collectors.toList());
        //获取有商品的库存余量
        Map<SkuEntity, Integer> skuMap = channelList.stream()
                .collect(Collectors.groupingBy(
                        ChannelEntity::getSku,
                        Collectors.summingInt(ChannelEntity::getCurrentCapacity)));//对库存数求和
        return skuMap.entrySet().stream().map(entry -> {
                    SkuEntity sku = entry.getKey(); //查询商品
                    SkuVO skuVO = new SkuVO();
                    BeanUtils.copyProperties(sku, skuVO);
                    skuVO.setImage(sku.getSkuImage());//图片
                    skuVO.setCapacity(entry.getValue());
                    skuVO.setRealPrice(sku.getPrice());//真实价格
                    return skuVO;
                }).sorted(Comparator.comparing(SkuVO::getCapacity).reversed())  //按库存量降序排序
                .collect(Collectors.toList());
    }

    @Override
    public Boolean hasCapacity(String innerCode, Long skuId) {
        var qw = new LambdaQueryWrapper<ChannelEntity>();
        qw
                .eq(ChannelEntity::getInnerCode, innerCode)
                .eq(ChannelEntity::getSkuId, skuId)
                .gt(ChannelEntity::getCurrentCapacity, 0);
        return channelService.count(qw) > 0;
    }

    /**
     * 创建补货工单
     *
     * @param innerCode
     */
    @Override
    public void createSupplyTask(String innerCode) {
        //根据售货机编号查询货道
        List<ChannelEntity> channelEntityList = channelService.getChannelesByInnerCode(innerCode);


        SupplyChannel supplyChannel = new SupplyChannel();
        List<SupplyChannel> list = new ArrayList<>();
        for (ChannelEntity channelEntity : channelEntityList) {
            if (channelEntity.getCurrentCapacity()< channelEntity.getMaxCapacity()) {
                //通过货道最大容量-当前容量获取货道的缺货数据
                Integer supplyData = channelEntity.getMaxCapacity() - channelEntity.getCurrentCapacity();
                supplyChannel.setChannelId(channelEntity.getChannelId().toString());
                supplyChannel.setCapacity(supplyData);
                supplyChannel.setSkuId(channelEntity.getSkuId());
                supplyChannel.setSkuName(channelEntity.getSku().getSkuName());
                supplyChannel.setSkuImage(channelEntity.getSku().getSkuImage());

                list.add(supplyChannel);
            }
        }
        if (list.size() > 0) {
            //封装为补货协议
            SupplyContract supplyContract = new SupplyContract();
            supplyContract.setSupplyData(list);
            supplyContract.setInnerCode(innerCode);

            //发送到EMQ
            try {
                mqttProducer.send(TopicConfig.VMS_SUPPLY_TOPIC, 2, supplyContract);
            } catch (JsonProcessingException e) {
                log.error("发送补货消息异常");
            }
        }
    }

    /**
     * 出货方法
     *
     * @param vendoutContract
     */
    @Override
    public void deliverProduction(VendoutContract vendoutContract) {
        String innerCode = vendoutContract.getInnerCode();
        VendoutData vendoutData = vendoutContract.getVendoutData();
        long skuId = vendoutData.getSkuId();
        String orderNo = vendoutData.getOrderNo();

        //1.减库存
        //根据机器编号获取货道列表
        List<ChannelEntity> channelList = channelService.getChannelesByInnerCode(innerCode);
        //获取存有该商品的货道列表
        List<String> list = channelList.stream()
                .filter(channelEntity -> channelEntity.getSkuId() == skuId)
                .map(channelEntity -> channelEntity.getChannelCode())
                .collect(Collectors.toList());

        if (null == list || list.size() < 0) {
            throw new LogicException("商品无库存");
        }
        //取第一个货道编码
        String channelCode = list.get(0);
        ChannelEntity channelInfo = channelService.getChannelInfo(innerCode, channelCode);
        //该货道库存减1
        channelInfo.setCurrentCapacity(channelInfo.getCurrentCapacity() - 1);

        //2.记录出货流水表
        //2.1封装出货流水表实体类
        VendoutRunningEntity vendoutRunningEntity = new VendoutRunningEntity();
        vendoutRunningEntity.setOrderNo(orderNo);
        vendoutRunningEntity.setInnerCode(innerCode);
        vendoutRunningEntity.setStatus(false);
        vendoutRunningEntity.setSkuId(skuId);
        vendoutRunningEntity.setSkuName(channelInfo.getSku().getSkuName());
        vendoutRunningEntity.setPrice(channelInfo.getPrice());

        vendoutRunningService.save(vendoutRunningEntity);

        //在出货协议中，加上货道编号
        vendoutData.setChannelCode(channelCode);
        vendoutContract.setVendoutData(vendoutData);

        //通过EMQ发送给售货机终
        //主题：vm/售货机编号/vendout
        try {
            mqttProducer.send(TopicConfig.getVendoutTopic(innerCode), 2, vendoutContract);
        } catch (JsonProcessingException e) {
            log.error("出货消息发送失败");
        }
    }
}
